Article Figures & SI

Figures

Current phylogenetic relationships of the 20 major haplogroups of the global Y chromosome gene tree. Star denotes the new topology formed by the M522 and M523 SNPs that now join the previously independent IJ-M429 and KT-M9 haplogroups. Diamond indicates position of M526 SNP that now unifies haplogroups KMNOPS. M522, M523, and M526 marker specifications are given in Table S3.

Slopes of the relative linear decrease of genetic variation within populations, estimated from the average heterozygosity (or equivalent quantity for Y chromosome) of each population, as a function of its geographic distance from Addis Ababa (see also Fig. S6 and Table S4)

Chromosome

Markers

Source

Slope (absolute value)

All autosomes + X

783 microsatellites

Ref. 11

6.5 × 10−6

All autosomes + X

650,000 SNPs

Ref. 12

3.8 × 10−6

X chromosomes

Haplotypes

Ref. 12

18.8 × 10−6

Y chromosome

NRY haplogroups

This article

25.7 × 10−6

The decrease has been postulated to be due to drift caused by the serial founder effect (11). Geographic distance in km. All slopes are negative: their absolute values are given in the table.

Data supplements

Supporting Information

Correction to the Supporting Information (SI)The authors note that, because of a printer's error, Fig. S2 appeared incorrectly. Below is a link to the corrected SI.

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